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Radiation Protection Dosimetry Advance Access published online on July 20, 2004
Radiation Protection Dosimetry, doi:10.1093/rpd/nch333
Copyright © 2004 Oxford University Press.
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Received March 26, 2004
Revised May 5, 2004
Accepted May 6, 2004

SCIENTIFIC AND TECHNICAL PAPER

ASSESSMENT OF AIRCREW RADIATION EXPOSURE BY FURTHER MEASUREMENTS AND MODEL DEVELOPMENT

B. J. Lewis 1*, M. Desormeaux 1, A. R. Green 1, L. G. I. Bennett 1, A. Butler 1, M. McCall 1, J. C. Saez Vergara 2

1 Department of Chemistry and Chemical Engineering, Royal Military College of Canada, P.O. Box 17000, Kingston, Ontario, Canada K7K 7B4
2 Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Av. Complutense 22, E-28040 Madrid, Spain

* To whom correspondence should be addressed. E-mail: lewis-b{at}rmc.ca.


  Abstract

A methodology is presented for collecting and analysing exposure measurements from galactic cosmic radiation using a portable equipment suite and encapsulating these data into a semi-empirical model/Predictive Code for Aircrew Radiation Exposure (PCAIRE) for the assessment of aircrew radiation exposure on any flight over the solar cycle. The PCAIRE code has been validated against integral route dose measurements at commercial aircraft altitudes during experimental flights made by various research groups over the past 5 y with code predictions typically within ±20% of the measured data. An empirical correlation, based on ground-level neutron monitoring data, is detailed further for estimation of aircrew exposure from solar particle events. The semi-empirical models have been applied to predict the annual and career exposure of a flight crew member using actual flight roster data, accounting for contributions from galactic radiation and several solar energetic-particle eventsover the period 1973-2002.


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